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diff --git a/contexts/data/lib/closure-library/closure/goog/dom/browserrange/geckorange.js b/contexts/data/lib/closure-library/closure/goog/dom/browserrange/geckorange.js
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--- a/contexts/data/lib/closure-library/closure/goog/dom/browserrange/geckorange.js
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@@ -1,86 +0,0 @@
-// Copyright 2007 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Definition of the Gecko specific range wrapper. Inherits most
- * functionality from W3CRange, but adds exceptions as necessary.
- *
- * DO NOT USE THIS FILE DIRECTLY. Use goog.dom.Range instead.
- *
- * @author robbyw@google.com (Robby Walker)
- */
-
-
-goog.provide('goog.dom.browserrange.GeckoRange');
-
-goog.require('goog.dom.browserrange.W3cRange');
-
-
-
-/**
- * The constructor for Gecko specific browser ranges.
- * @param {Range} range The range object.
- * @constructor
- * @extends {goog.dom.browserrange.W3cRange}
- */
-goog.dom.browserrange.GeckoRange = function(range) {
- goog.dom.browserrange.W3cRange.call(this, range);
-};
-goog.inherits(goog.dom.browserrange.GeckoRange, goog.dom.browserrange.W3cRange);
-
-
-/**
- * Creates a range object that selects the given node's text.
- * @param {Node} node The node to select.
- * @return {goog.dom.browserrange.GeckoRange} A Gecko range wrapper object.
- */
-goog.dom.browserrange.GeckoRange.createFromNodeContents = function(node) {
- return new goog.dom.browserrange.GeckoRange(
- goog.dom.browserrange.W3cRange.getBrowserRangeForNode(node));
-};
-
-
-/**
- * Creates a range object that selects between the given nodes.
- * @param {Node} startNode The node to start with.
- * @param {number} startOffset The offset within the node to start.
- * @param {Node} endNode The node to end with.
- * @param {number} endOffset The offset within the node to end.
- * @return {goog.dom.browserrange.GeckoRange} A wrapper object.
- */
-goog.dom.browserrange.GeckoRange.createFromNodes = function(startNode,
- startOffset, endNode, endOffset) {
- return new goog.dom.browserrange.GeckoRange(
- goog.dom.browserrange.W3cRange.getBrowserRangeForNodes(startNode,
- startOffset, endNode, endOffset));
-};
-
-
-/** @override */
-goog.dom.browserrange.GeckoRange.prototype.selectInternal = function(
- selection, reversed) {
- if (!reversed || this.isCollapsed()) {
- // The base implementation for select() is more robust, and works fine for
- // collapsed and forward ranges. This works around
- // https://bugzilla.mozilla.org/show_bug.cgi?id=773137, and is tested by
- // range_test.html's testFocusedElementDisappears.
- goog.base(this, 'selectInternal', selection, reversed);
- } else {
- // Reversed selection -- start with a caret on the end node, and extend it
- // back to the start. Unfortunately, collapse() fails when focus is
- // invalid.
- selection.collapse(this.getEndNode(), this.getEndOffset());
- selection.extend(this.getStartNode(), this.getStartOffset());
- }
-};